Math Problem Statement
Solution
The image contains the following mathematical problem:
Evaluate the limit:
To solve this limit, we first notice that substituting directly into the expression would yield an indeterminate form of . Therefore, we need to simplify the expression before evaluating the limit.
Step 1: Factor the numerator and the denominator
- The numerator is a difference of cubes, which can be factored as:
- The denominator is a difference of squares, which can be factored as:
Step 2: Simplify the expression
The expression now becomes: We can cancel the common factor in both the numerator and the denominator:
Step 3: Evaluate the limit
Now, substitute into the simplified expression:
So, the limit is:
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Related Questions:
- How do you factor polynomials involving cubes?
- What are common indeterminate forms in limits, and how do you resolve them?
- Can you explain how L'Hopital's rule works for resolving indeterminate forms?
- How do you approach limits that result in infinity?
- What is the significance of simplifying expressions before evaluating limits?
Tip: Always check if you can factor the expression before directly substituting the value when evaluating limits. It often simplifies the problem and avoids indeterminate forms.
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Math Problem Analysis
Mathematical Concepts
Limits
Indeterminate Forms
Algebraic Factoring
Formulas
Difference of Cubes: a^3 - b^3 = (a - b)(a^2 + ab + b^2)
Difference of Squares: a^2 - b^2 = (a - b)(a + b)
Theorems
Factorization Theorem
Limit Laws
Suitable Grade Level
Grades 10-12